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Askold Shcherbakov
Askold Shcherbakov

Spi Tt Lpt 01 317



I applied to the system administrator to change the proxy authentication type from Kerberos to NTLM. I'm not sure if it was mandatory (I'm an ignoramus in this matter), but my application was approved.




Spi Tt Lpt 01 317



After running a pcap trace between my server and the proxy, i noticed that the "HTTP CONNECT" request sent to the proxy during a git clone still not have a "Proxy-Authorization" header set to basic. This was due to my git version "1.8.3.1" that do not support http.proxyAuthMethod.


After installing a newest git version (2.16.6), using rpm packages foud here " _64/packages/g/", setting http.proxyAuthMethod to basic had finally an effect on git behavior and then my git clone was successful.


I experienced this error due to my corporate network using one proxy while on premise, and a second (completely different) proxy when VPN'd from the outside. I was originally configured for the on-premise proxy, received the error, and then had to update my config to use the alternate, off-prem, proxy when working elsewhere.


Have the same problem while using sourcetreeReason was Maybe switching the System Proxy from on to off while sourcetree was open. For some reason this was written into the config file of a project. This can be easily deleted over sourcetree by "Settings" -> "Edit configuration file".Just delete it out there under http


I tried all of the solutions but none of them worked. Then I saw my .gitconfig file. It had multiple repeated entries and some of them were not correct(As I had tried multiple solutions). Finally I removed all the redundant and non needed settings and just kept the four settings mentioned by Sairam Kukadala, in his answer above, and Voila! it worked.


Here's an alternate answer if you haven't tried any crazy proxy set up. Make sure that you are adding the repository through github.com or github enterprise instead of using a URL. If you are trying to use a github.com repository via the URL, you'll see the 407 error. Once I realized what I was doing my error went away.


This error occurred for me because I had not updated my stored GitHub credentials in windows credentials, after I had generated a new login token on GitHub. Editing the windows credential password with the new token resolved the issue for me.


Small Computer System Interface (SCSI, /ˈskʌzi/ SKUZ-ee)[1] is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, electrical, optical and logical interfaces. The SCSI standard defines command sets for specific peripheral device types; the presence of "unknown" as one of these types means that in theory it can be used as an interface to almost any device, but the standard is highly pragmatic and addressed toward commercial requirements. The initial Parallel SCSI was most commonly used for hard disk drives and tape drives, but it can connect a wide range of other devices, including scanners and CD drives, although not all controllers can handle all devices.


The ancestral SCSI standard, X3.131-1986, generally referred to as SCSI-1, was published by the X3T9 technical committee of the American National Standards Institute (ANSI) in 1986. SCSI-2 was published in August 1990 as X3.T9.2/86-109, with further revisions in 1994 and subsequent adoption of a multitude of interfaces. Further refinements have resulted in improvements in performance and support for ever-increasing data storage capacity.[2]


SCSI is derived from "SASI", the "Shugart Associates System Interface", developed beginning 1979[3] and publicly disclosed in 1981.[4] Larry Boucher is considered to be the "father" of SASI and ultimately SCSI due to his pioneering work first at Shugart Associates and then at Adaptec.[5]


A SASI controller provided a bridge between a hard disk drive's low-level interface and a host computer, which needed to read blocks of data. SASI controller boards were typically the size of a hard disk drive and were usually physically mounted to the drive's chassis. SASI, which was used in mini- and early microcomputers, defined the interface as using a 50-pin flat ribbon connector which was adopted as the SCSI-1 connector. SASI is a fully compliant subset of SCSI-1 so that many, if not all, of the then-existing SASI controllers were SCSI-1 compatible.[6]


Until at least February 1982, ANSI developed the specification as "SASI" and "Shugart Associates System Interface"[7] however, the committee documenting the standard would not allow it to be named after a company. Almost a full day was devoted to agreeing to name the standard "Small Computer System Interface", which Boucher intended to be pronounced "sexy", but ENDL's[8] Dal Allan pronounced the new acronym as "scuzzy" and that stuck.[5]


A number of companies such as NCR Corporation, Adaptec and Optimem were early supporters of SCSI.[7] The NCR facility in Wichita, Kansas is widely thought to have developed the industry's first SCSI controller chip; it worked the first time.[9]


Since its standardization in 1986, SCSI has been commonly used in the Amiga, Atari, Apple Macintosh and Sun Microsystems computer lines and PC server systems. Apple started using the less-expensive parallel ATA (PATA, also known as IDE) for its low-end machines with the Macintosh Quadra 630 in 1994, and added it to its high-end desktops starting with the Power Macintosh G3 in 1997. Apple dropped on-board SCSI completely in favor of IDE and FireWire with the (Blue & White) Power Mac G3 in 1999, while still offering a PCI SCSI host adapter as an option on up to the Power Macintosh G4 (AGP Graphics) models.[10] Sun switched its lower-end range to Serial ATA (SATA). Commodore included SCSI on the Amiga 3000/3000T systems and it was an add-on to previous Amiga 500/2000 models. Starting with the Amiga 600/1200/4000 systems Commodore switched to the IDE interface. Atari included SCSI as standard in its Atari MEGA STE, Atari TT and Atari Falcon computer models. SCSI has never been popular in the low-priced IBM PC world, owing to the lower cost and adequate performance of ATA hard disk standard. However, SCSI drives and even SCSI RAIDs became common in PC workstations for video or audio production.


The non-physical iSCSI preserves the basic SCSI paradigm, especially the command set, almost unchanged, through embedding of SCSI-3 over TCP/IP. Therefore, iSCSI uses logical connections instead of physical links and can run on top of any network supporting IP. The actual physical links are realized on lower network layers, independently from iSCSI. Predominantly, Ethernet is used which is also of serial nature.


SCSI is popular on high-performance workstations, servers, and storage appliances. Almost all RAID subsystems on servers have used some kind of SCSI hard disk drives for decades (initially Parallel SCSI, interim Fibre Channel, recently SAS), though a number of manufacturers offer SATA-based RAID subsystems as a cheaper option. Moreover, SAS offers compatibility with SATA devices, creating a much broader range of options for RAID subsystems together with the existence of nearline SAS (NL-SAS) drives. Instead of SCSI, modern desktop computers and notebooks typically use SATA interfaces for internal hard disk drives, with NVMe over PCIe gaining popularity as SATA can bottleneck modern solid-state drives.


SCSI is available in a variety of interfaces. The first was parallel SCSI (also called SCSI Parallel Interface or SPI), which uses a parallel bus design. Since 2005, SPI was gradually replaced by Serial Attached SCSI (SAS), which uses a serial design but retains other aspects of the technology. Many other interfaces which do not rely on complete SCSI standards still implement the SCSI command protocol; others drop physical implementation entirely while retaining the SCSI architectural model. iSCSI, for example, uses TCP/IP as a transport mechanism, which is most often transported over Gigabit Ethernet or faster network links.


SCSI interfaces have often been included on computers from various manufacturers for use under Microsoft Windows, classic Mac OS, Unix, Commodore Amiga and Linux operating systems, either implemented on the motherboard or by the means of plug-in adaptors. With the advent of SAS and SATA drives, provision for parallel SCSI on motherboards was discontinued.[citation needed][12]


Initially, the SCSI Parallel Interface (SPI) was the only interface using the SCSI protocol. Its standardization started as a single-ended 8-bit bus in 1986, transferring up to 5 MB/s, and evolved into a low-voltage differential 16-bit bus capable of up to 320 MB/s. The last SPI-5 standard from 2003 also defined a 640 MB/s speed which failed to be realized.


Parallel SCSI specifications include several synchronous transfer modes for the parallel cable, and an asynchronous mode. The asynchronous mode is a classic request/acknowledge protocol, which allows systems with a slow bus or simple systems to also use SCSI devices. Faster synchronous modes are used more frequently.


Fibre Channel can be used to transport SCSI information units, as defined by the Fibre Channel Protocol for SCSI (FCP). These connections are hot-pluggable and are usually implemented with optical fiber.


The SCSI RDMA Protocol (SRP) is a protocol that specifies how to transport SCSI commands over a reliable RDMA connection. This protocol can run over any RDMA-capable physical transport, e.g. InfiniBand or Ethernet when using RoCE or iWARP.


In addition to many different hardware implementations, the SCSI standards also include an extensive set of command definitions. The SCSI command architecture was originally defined for parallel SCSI buses but has been carried forward with minimal change for use with iSCSI and serial SCSI. Other technologies which use the SCSI command set include the ATA Packet Interface, USB Mass Storage class and FireWire SBP-2.


In SCSI terminology, communication takes place between an initiator and a target. The initiator sends a command to the target, which then responds. SCSI commands are sent in a Command Descriptor Block (CDB). The CDB consists of a one byte operation code followed by five or more bytes containing command-specific parameters. 350c69d7ab


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